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1.
Carvalho Geila S. Oliveira Jakeline R. Vasques Isabela C. F. Santana Monna Lysa T. Justi Marina Job Marcel T. P. de Lima Francielle R. D. Marques João José 《Environmental science and pollution research international》2021,28(35):48427-48437
Environmental Science and Pollution Research - Potentially toxic elements (PTEs) are of great concern in steel mill wastes. Therefore, in order to use them as potential fertilizers in soil, risk... 相似文献
2.
Mayra Avelar Blanca Bonilla-Heredia Martín Merino-Ibarra Jorge A. Herrera-Silveira Javier Ramirez Humberto Rosas Job Valdespino Juan P. Carricart-Ganivet Ana Martínez 《Environmental monitoring and assessment》2013,185(9):7591-7603
The management of protected areas in karstic regions is a challenge because flooded cave systems form there and provide underground hydrological conducts that may link different zones. As a consequence, affectations to the protected areas can possibly occur as a consequence of human activities in remote areas and may therefore pass undetected. Thus, the monitoring of possible contaminants in these regions is becoming imperative. In this work, we analyze the concentration of essential (iron) and non-essential metals (cadmium and chromium) in the seagrass Thalassia testudinum that grows in Yalahau Lagoon, located in a near-to-pristine protected area of the Yucatán Peninsula, close to the rapidly developing touristic belt of the Mexican Caribbean. Salinity and silicate patterns show that Yalahau is an evaporation lagoon, where groundwater discharge is important. High iron (>400 μg/g), cadmium (>4 μg/g), and chromium (≈1 μg/g) concentrations were found in the area of highest groundwater input of the lagoon. High levels (5.1 μg/g) were also found near the town dump. In the rest of the sampling sites, metal concentrations remained near to background levels as estimated from other works. Temporal changes of concentrations in the seagrass tissues show also a local input and an input from the groundwater that could provoke an environmental problem in the Yalahau Lagoon in the near future. 相似文献
3.
Michael Donovan Charles A. Job William C. Sonzogni 《Journal of the American Water Resources Association》1981,17(1):23-28
ABSTRACT: The Illinois v. Milwaukee Federal District Court decision is the most far reaching application yet of the federal common law of nuisance to interstate water pollution conflicts. Although a Federal Appelate Court recently rescinded part of the district court decision, Milwaukee must still upgrade its metropolitan sewage system to a level beyond that required by federal and state regulations. The improvements must be completed with or without federal aid. The case points out the apparent inability of the Clean Water Act, the most comprehensive federal legislation affecting the nation's water quality, to deal with certain interstate water quality conflicts. The Milwaukee decision could set a precedent for similar settlements elsewhere which may in turn affect the U.S. Environmental Protection Agency's water quality clean up program. A more integrated, ecosystem conscious approach to management of shared water resources (e.g., the Great Lakes) would help reduce the need for court decisions like Illinois v. Milwaukee. 相似文献
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The Euroconference on Coastal Management Research held in San-Feliu de Guixols, Spain, in December 1997 brought together scientists
from a great variety of disciplines in the natural and social sciences, in a search for modes of transdisciplinary cooperation
in the context of integrated coastal management. During the conference the participants discussed which interactions among
disciplines are required for different coastal issues. Discussion groups each focused on a particular type of coastal environment,
characterized by a particular type and degree of development. The group discussions were inspired by background papers which
were prepared for this purpose by invited speakers. A selection of these background papers were redrafted on the basis of
the conference outcome, and are published in this issue of theJournal of Coastal Conservation. The reports of the discussion groups are published in a conference proceedings booklet issued by EMAPS (1998), the European
Polar and Marine Sciences Secretariat. A synthesis of ideas on the challenge of transdisciplinarity, expressed during the
discussion group sessions, is presented in this introduction. The statements reflect opinions or suggestions which received
broad support from the participants; they should not be taken as proven knowledge. 相似文献
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Canhada João C. S. Paiva Fábio F. G. Shinohara Gabriel M. M. Okimoto Fernando Hiranobe Carlos T. Teixeira Silvio R. Job Aldo E. Santos Renivaldo J. 《Journal of Material Cycles and Waste Management》2023,25(2):944-953
Journal of Material Cycles and Waste Management - Leather production is a technology that boosts the economy because of its versatility and durability. However, the wastes generated throughout the... 相似文献
8.
A. K. Djien Liem Job A. van Zorge 《Environmental science and pollution research international》1995,2(1):46-56
Several countries have put much effort in dioxin research programmes with the aim to assess the risks of dioxin exposure,
to identify dioxin sources and to quantify their contribution to environmental emissions and human exposure. In this review,
the accent has been put on: sources of dioxins and their contribution to the total dioxin emissions, sources of human exposure
and their contribution to exposure and measures to reduce emission and exposure. The information from countries with existing
dioxin regulations is reviewed and compared. Uncertainties which hamper comparability of data are indicated. Results of measures
and expectations for the near future are presented. 相似文献
9.
The ability of young coral reef fishes to feed using solely ultraviolet-A (UV-A) radiation during ontogeny was examined using
natural prey in experimental tanks. Larvae and juveniles of three coral reef fish species (Pomacentrus amboinensis, Premnas biaculeatus and Apogon compressus) are able to feed successfully using UV-A radiation alone during the later half of the pelagic larval phase. The minimum
UV radiation intensities required for larval feeding occur in the field down to depths of 90–130 m in oceanic waters and 15–20 m
in turbid inshore waters. There was no abrupt change in UV sensitivity after settlement, indicating that UV photosensitivity
may continue to play a significant role in benthic juveniles on coral reefs. Tests of UV sensitivity in the field using light
traps indicate that larval and juvenile stages of 16 coral reef fish families are able to detect and respond photopositively
to UV wavelengths. These include representatives from families that are unlikely to possess UV sensitivity as adults due to
the UV transmission characteristics of the ocular media. Functional UV sensitivity may be more widespread in young coral reef
fishes than in the adults, and may play a significant role in detecting zooplanktonic prey. 相似文献
10.
Van Beelen P Wouterse MJ Masselink NJ Spijker J Mesman M 《Journal of contaminant hydrology》2011,122(1-4):86-95
A simplified method is used to assess the microbial activity of subsoils and soils across a broad geographic scale. Acetate was selected because it is a major intermediate in catabolic biochemical pathways. In order to get minimal disturbance, only a small amount of tritium labelled acetate and water is added to the subsoil material. After an incubation time, the subsoil material is separated from the water by centrifugation and the formed tritium labelled water is separated from the remaining acetate by evaporation. The data of 128 locations in the Netherlands were plotted in a soil map and were also compared with the depth, dry weight, electric conductivity, pH and nitrate concentration. The peat areas consisted of limed meadows with a high groundwater level whereas the sand areas often showed deeper groundwater levels and a lower pH. The subsoils at the groundwater table of the peat areas, which are in contact with soil air, showed a higher mineralization rate compared with the surface soils in our study. In contrast, the mineralization rate of the subsoil at the groundwater table of sandy soils showed on average a factor 30 lower rate. Nevertheless, the self purification capacity of the subsoil can be vital under weather conditions where the surface soil becomes less active. 相似文献